ACQUISITIONS - Narrative (Details) $ / shares in Units, $ in Thousands			3 Months Ended	9 Months Ended
	Apr. 01, 2022 USD ($) banking_center $ / shares shares	Apr. 01, 2021 USD ($)	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2021 USD ($)	Dec. 31, 2021 $ / shares shares
Business Acquisition [Line Items]
Cash paid in acquisition				$ 79,324	$ 3,225
Preferred Class B
Business Acquisition [Line Items]
Entity listing, depository receipt ratio	0.01
Preferred Class B | Level One
Business Acquisition [Line Items]
Dividend rate %	7.50%
Entity listing, depository receipt ratio	0.01
Series A Preferred Stock
Business Acquisition [Line Items]
Liquidation value per share (in dollars per share) | $ / shares			$ 2,500	$ 2,500		$ 2,500
Preferred Stock, issued (in shares) | shares			10,000	10,000		10,000
Level One
Business Acquisition [Line Items]
Percentage of interest acquired	100.00%
Number of banking centers | banking_center	17
Exchange ratio	0.7167
Cash payment per share (in dollars per share) | $ / shares	$ 10.17
Cash paid in acquisition	$ 79,300
Other intangibles	18,642
Operating revenue			$ 18,300	$ 38,700
Net of tax of non-recurring expenses			$ 2,600	$ 12,200
Level One | Other Intangible Assets
Business Acquisition [Line Items]
Other intangibles	18,600
Level One | Core Deposits
Business Acquisition [Line Items]
Other intangibles	$ 17,200
Estimated life	10 years
Level One | Non-compete
Business Acquisition [Line Items]
Other intangibles	$ 1,400
Estimated life	2 years
Level One | Common Stock
Business Acquisition [Line Items]
Issuance of common stock related to acquisitions (in shares) | shares	5,600,000
Level One | Series A Preferred Stock
Business Acquisition [Line Items]
Exchange ratio	1
Dividend rate %	7.50%
Liquidation value per share (in dollars per share) | $ / shares	$ 2,500
Preferred Stock, issued (in shares) | shares	10,000
Hoosier
Business Acquisition [Line Items]
Percentage of interest acquired		100.00%
Cash paid in acquisition		$ 3,225
Other intangibles		2,247
Assets under management		$ 290,000